The microsurgical technique of acoustic neuromas removal trans suboccipital——retrosigmoid sinus approach

Objective To Summary the microsurgical removal experience and technique of acoustic neuromas removal transsuboccipital--retrosigmoid sinus approach, and to improve the rate of tumor removing and facial nerve preserving. Methods A retrospective analysis of 11 patients suffering from acoustic neuroma were made. The patients were made microsurgery operation, which were performed with microsurgical technique trans-suboccipital-retrosigmoid sinus approach between Jan. 2004 and December. 2006. And microsurgical methods and skill were also retrospectively analyzed. Results Total resection of the tumor was achieved microsurgically in 8 cases, the total removal rate was 72.7 %. Facial nerve was preserved in 9 cases in anatomy (81.8%). No patient died in this series. Conclusions transsuboccipital--retrosigmoid sinus approach is safe and effective method for resection acoustic neuromas.Mastering the microsurgical anatomy and operative skills of acoustic neurinomas play an important role in resecting these tumors and preserving the nerve function.